Zero1000

JavaScript

11: タイマー
2: 例-2

1. AAA

index.html 
<script src="https://code.jquery.com/jquery-3.5.1.min.js"></script>


<div id="id1"></div>

<button onclick="bt()">bt()</button>
<button onclick="clear1()">clear()</button>


<script>

cnt=0


$("#id1").text(cnt)	
	
	
	
function bt(){
	

	
	tm1=setInterval(function(){cnt ++;$("#id1").text(cnt)}, 1000)
}	

	
function clear1(){
	
	
	clearTimeout(tm1)



	
}


	
	
	
	
	
</script>